Explore our export-certified product lines designed for high-end residential, commercial developments, and demanding coastal climates. Fully customizable via CAD/BIM shop drawings.
DERCHI, operating under Guangdong Dejiyoupin Doors and Windows Co., Ltd., represents the pinnacle of modern architectural door and window production. Spanning an expansive 180,000 square meter industrial hub in Foshan, Guangdong, our facility seamlessly integrates precision profile extrusion, thermal break assembly, computerized multi-axis CNC machining, automated glass processing, and robotic fluorocarbon/powder coating lines.
For more than two and a half decades, our technical focus has centered on solving real-world construction challenges for international builders, commercial general contractors, and prestigious architectural studios across North America, Australia, the Philippines, and Western Europe. By eliminating middlemen and maintaining end-to-end quality control, DERCHI provides direct factory pricing paired with verifiable international engineering compliance.
Certified to CE, ISO 9001, AS 2047 N6 cyclonic standards, and UL 10C positive pressure fire testing to ensure swift building authority plan approvals.
Our dedicated structural engineering division converts architectural schedules and rough opening elevations into production-ready CAD shop drawings free of charge.
Zero transit damage guarantee through five-tier packaging: anti-scratch film, EPE foam wrapping, corner bumpers, desiccants, and fumigated steel-banded plywood crates.
Our project management teams provide direct, real-time technical synchronization throughout North American EST and PST standard operational hours.
A rigorous examination of primary aluminium billets, mechanical properties, thermal break barrier physics, and durability metrics for exterior building envelopes.
We exclusively utilize certified prime primary 6063-T5 and 6061-T6 virgin aluminium billets, completely eliminating secondary scrap melts. Achieving tensile strengths > 215 MPa and yield strengths > 170 MPa, our structural door mullions support massive oversized glass dead loads without long-term hinge sagging or frame racking.
Standard: ASTM B221 / EN 755-2Condensation prevention and energy retention in extreme climates are resolved using Technoform PA66 GF25 (25% glass fiber reinforced polyamide) structural insulating strips. By segregating exterior and interior aluminium chambers, we break conductive pathways, achieving U-values low enough to satisfy strict IECC and Energy Star specifications.
Insulation: PA66GF25 Multi-ChamberOur automated horizontal and vertical coating lines utilize AkzoNobel and PPG fluorocarbon (PVDF) 3-coat finishes alongside architectural powder coating meeting Qualicoat Class 2 standards. Tested to withstand 4,000+ hours of continuous neutral salt spray without blistering, chalking, or delamination in harsh coastal salt-mist environments.
Compliance: AAMA 2605 / Qualicoat 2| Performance Characteristic | Commercial Grade 6063-T5 | Heavy-Duty Pivot Spec 6061-T6 | Passivhaus Class Thermal Spec | Standard Market Generic Door |
|---|---|---|---|---|
| Tensile Strength (Rm) | 215 - 230 MPa | 290 - 310 MPa | 220 MPa | 160 - 180 MPa (Recycled Scrap) |
| Thermal Transmittance (Uf) | 1.8 - 2.2 W/(m²·K) | 1.6 - 2.0 W/(m²·K) | ≤ 0.95 W/(m²·K) | > 4.5 W/(m²·K) (Non-Thermal) |
| Corner Joint Construction | Hydraulic Crimped + Cast Cleat | Welded Sub-Core + Extruded Cleat | Dual-Chamber Injection Pin Cleat | Self-Tapping Dry Screw Joinery |
| Air Infiltration Resistance | ≤ 0.05 cfm/ft² @ 6.24 psf | ≤ 0.03 cfm/ft² @ 6.24 psf | ≤ 0.01 cfm/ft² (Class 4) | > 0.30 cfm/ft² (Draft Prone) |
| Salt Spray Corrosion Barrier | 3,000 Hours (AAMA 2604) | 4,000 Hours (AAMA 2605) | 3,500 Hours (Marine Spec) | < 500 Hours (Rapid Oxidation) |
Strategic procurement shifts shaping specifications for developers, wholesale distributors, and commercial architectural firms worldwide.
Global procurement directives (such as the EU CBAM and US Green Building mandates) require strict tracking of embodied carbon. Leading developers are specifying aluminium produced exclusively via certified hydro-electric smelting with carbon footprints below 4.0 kg CO2e per kg of primary metal. DERCHI actively integrates traceable low-carbon supply chains.
Architects demand massive panoramic glass spans with sightlines down to 20mm, yet building codes require stringent U-values. The industry is moving toward vacuum-insulated glass (VIG) and asymmetric argon triple-glazing integrated into slender thermally broken systems, delivering uncompromised aesthetic minimalism and supreme insulation.
Oversized pivot doors exceeding 500 kg require seamless electromechanical hardware. Sourcing trends highlight multi-point motorized latching mechanisms embedded directly within the door head, triggered by flush-mounted fingerprint biometric scanners, facial recognition hubs, or whole-house smart integration (Zigbee/Matter/BACnet).
Essential guidance addressing technical specifications, lead times, logistics, and verification for foreign procurement specialists.
We work predominantly with 6063-T5 for complex, tight-tolerance architectural extrusions and 6061-T6 for high-load structural pivot uprights and oversized commercial hinges. All billets conform strictly to ASTM B221 and GB/T 5237 chemical composition standards.
We incorporate structural polyamide 66 with 25% glass fiber (PA66 GF25) thermal barrier strips manufactured by Technoform or equivalent tier-1 producers. Using double and triple chamber cavities, our systems achieve U-values as low as 0.8 to 1.4 W/(m²·K).
Yes. All OEM/ODM production is custom-manufactured. Our engineering division works directly from architectural schedules, converting fractional inch dimensions or metric measurements into shop drawings with complete threshold and flashing interface details.
Our systems hold CE, ISO 9001:2015, Australian AS 2047 cyclonic impact, and UL 10C positive pressure fire-rated certifications. Project-specific NFRC thermal performance certificates and structural calculation packages can be provided during submittals.
Standard OEM manufacturing cycles range between 25 to 35 business days following CAD shop drawing sign-off. Finished assemblies are sealed in moisture-barrier wrap, padded with high-density EPE foam, and encased in fully enclosed fumigated plywood crates.
We welcome third-party technical audits (such as SGS, TÜV, or Bureau Veritas) and offer live 360-degree interactive factory virtual tours. We also provide full factory acceptance testing (FAT) video documentation for each unique production order.
Submit your architectural elevations, rough opening schedules, or custom OEM profile extrusions. Our structural engineering group provides full CAD submittals, load calculations, and competitive factory-direct wholesale pricing within 24 hours.